11427047531 has 4 divisors (see below), whose sum is σ = 11427672000. Its totient is φ = 11426423064.

The previous prime is 11427047521. The next prime is 11427047603. The reversal of 11427047531 is 13574072411.

11427047531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13574072411 = 601 ⋅22585811.

It is a cyclic number.

It is not a de Polignac number, because 11427047531 - 2²² = 11422853227 is a prime.

It is a super-2 number, since 2×11427047531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11427047491 and 11427047500.

It is not an unprimeable number, because it can be changed into a prime (11427047521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283931 + ... + 321668.

It is an arithmetic number, because the mean of its divisors is an integer number (2856918000).

Almost surely, 2^11427047531 is an apocalyptic number.

11427047531 is a deficient number, since it is larger than the sum of its proper divisors (624469).

11427047531 is an equidigital number, since it uses as much as digits as its factorization.

11427047531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624468.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 11427047531 in words is "eleven billion, four hundred twenty-seven million, forty-seven thousand, five hundred thirty-one".